CN219619876U

CN219619876U - Multilayer composite board structure for steel coil packaging

Info

Publication number: CN219619876U
Application number: CN202321153771.5U
Authority: CN
Inventors: 张普军
Original assignee: Shenyang Fenghe Packing Co ltd
Current assignee: Shenyang Fenghe Packing Co ltd
Priority date: 2023-05-15
Filing date: 2023-05-15
Publication date: 2023-09-01
Anticipated expiration: 2033-05-15

Abstract

The utility model discloses a multilayer composite board structure for steel coil packaging, which comprises an iron skin layer, wherein the outer side of the iron skin layer is bonded with an outer film layer; the inner side of the iron skin layer is bonded with the plastic plate layer or the density plate layer; the thickness of the iron skin layer is 0.15-0.7mm; the steel coil is abutted with the plastic plate layer or the density plate layer. The utility model has the advantages that: the thickness of the iron skin layer is smaller, so that the cost is reduced; the design of the conductive lugs ensures the consistent electric potential of the outer package and prevents the steel coil from rusting; the inner side adopts a plastic plate layer or a density plate layer, so that a buffer distance is provided, and a buffer effect is better.

Description

Multilayer composite board structure for steel coil packaging

Technical Field

The utility model relates to the technical field of materials, in particular to a protective plate structure for steel coil transportation.

Background

In the process of delivering the steel coil to a user, a large transportation distance is needed, and the steel coil is required to be protected in all directions in order to prevent the steel coil from being damaged in the transportation process. In the prior art, an iron skin layer is generally adopted to cover and protect the outer surface of the steel coil; in order to ensure certain rigidity and strength, the thickness of the iron sheet is larger, so that the cost is higher; in addition, the method of simply adopting the iron sheet and the protective film has poor capability of resisting external impact and small buffer effect.

Chinese patent application No.: CN202211494413.0 discloses a novel structure of high-strength wood-plastic composite board for steel coil packaging and its manufacturing method, comprising a medium density fiberboard, a decorative layer arranged on one side of the medium density fiberboard and a bending-resistant layer arranged on the other side of the medium density fiberboard, wherein the decorative layer comprises a decorative film which is formed by BOPP film and PE film and has a thickness of 30-60 um, the bending-resistant layer is woven cloth with a weight of 40-60 g/m2, the original process of the high-strength wood-plastic composite board is changed into a process of compounding 3 times into a process of compounding 2 times, thus the original process effect can be achieved, the production efficiency is effectively improved, the energy consumption and raw material consumption are reduced, and the bending-resistant, waterproof and anti-collision performances are superior, the production efficiency is higher, the production cost is lower, and the novel structure is suitable for steel coil packaging.

Patent number CN201811506594.8 discloses a high-strength wood-plastic composite board with good bending resistance for steel coil packaging, which comprises a decorative layer (1), a first composite waterproof layer (2), a first bending-resistant layer (3), a second composite waterproof layer (4), a substrate (5), a third composite waterproof layer (6) and a second bending-resistant layer (7) which are sequentially arranged from outside to inside; the first bending-resistant layer (3) and the second bending-resistant layer (7) are both made of woven cloth;

the prior art adopts a composite board structure, but has poor antistatic effect because of no iron skin layer, inevitably has electrochemical reaction because of contact between the outer surface of the package and air and moisture in the air, and has different electric potentials at different positions of the outer package because of no conductive layer, thereby causing a certain potential difference, and the potential difference is combined with the moisture in the air, so that the surface of the steel coil is easy to rust.

Disclosure of Invention

In order to solve the technical problems, the utility model aims to provide a multi-layer composite board structure for steel coil packaging, which comprises an iron skin layer, wherein the outer side of the iron skin layer is bonded with an outer film layer; the inner side of the iron skin layer is bonded with the plastic plate layer or the density plate layer; the thickness of the iron skin layer is 0.15-0.7mm; the steel coil is abutted with the plastic plate layer or the density plate layer.

The inner side of the plastic plate layer or the density plate layer is bonded with the inner film layer.

The iron sheet layer is provided with a conductive lug, and the conductive lug is abutted with the axial end face of the steel coil.

The outside of adventitia layer is printed with patterns and characters, and the outside of adventitia layer is provided with a protective paint layer.

The utility model has the advantages that: the thickness of the iron skin layer is smaller, so that the cost is reduced; the design of the conductive lugs ensures the consistent electric potential of the outer package and prevents the steel coil from rusting; the inner side adopts a plastic plate layer or a density plate layer, so that a buffer distance is provided, and a buffer effect is better.

Drawings

FIG. 1 is a schematic cross-sectional view of the present utility model;

fig. 2 is a schematic diagram of the connection with a coil of steel when the present utility model is in use.

The utility model will now be described in detail with reference to the accompanying drawings, as shown in the figures, comprising an iron skin layer 2, the outer side of which is bonded to an outer membrane layer 1; the inner side of the iron sheet layer 2 is bonded with a plastic plate layer or a density plate layer 3; the thickness of the iron skin layer is 0.15-0.7mm; the steel coil 8 is abutted against the plastic plate layer or the density plate layer 3.

The outer film layer material is formed by bonding and compounding a BOPP film (biaxially oriented polypropylene film) and a PE (polyethylene) film.

In order to protect the surface of the steel coil, the inner side of the plastic plate layer or the density plate layer is bonded with an inner film layer 4, and the inner film layer is a polyethylene foam layer;

in order to ensure consistent potential and prevent potential difference generated by inconsistent potential from further causing corrosion, the iron sheet layer is provided with conductive lugs 21, and the conductive lugs are abutted with the axial end face of the steel coil 8.

For attractive appearance and sealing effect, the outer side of the outer film layer is printed with patterns and characters, and a protective paint layer is arranged on the outer side of the outer film layer.

In the utility model, the plastic in the plastic layer refers to a layered structure formed by singly or in a blending way of materials such as polyethylene, polypropylene and the like.

The layers are connected together by glue joint resin in a pressing way to form an integral structure.

The tensile strength of the utility model reaches 20.1MPa, and the bending strength reaches 25.9MPa.

Claims

1. A multilayer composite board structure for steel coil packaging is characterized in that: the iron skin layer is bonded with the outer membrane layer at the outer side; the inner side of the iron skin layer is bonded with the plastic plate layer or the density plate layer; the thickness of the iron skin layer is 0.15-0.7mm; the steel coil is abutted with the plastic plate layer or the density plate layer.

2. The multi-layer composite board structure for packaging steel coil according to claim 1, wherein: the inner side of the plastic plate layer or the density plate layer is bonded with the inner film layer.

3. The multi-layer composite board structure for packaging steel coil according to claim 1, wherein: the iron sheet layer is provided with a conductive lug, and the conductive lug is abutted with the axial end face of the steel coil.

4. The multi-layer composite board structure for packaging steel coil according to claim 1, wherein: the outside of adventitia layer is printed with patterns and characters, and the outside of adventitia layer is provided with a protective paint layer.